In economics, a service is a transaction in which no physical goods is transferred from the seller to the buyer.

The benefits of such a service are held to be demonstrated by the buyer's willingness to make the exchange.

Public services are those that society (nation state, fiscal union, region) as a whole pays for.

Using resources, skill, ingenuity, and experience, service providers benefit service consumers.

A political campaign is an organized effort which seeks to influence the decision making process within a specific group.

In democracies, political campaigns often refer to electoral campaigns, by which representatives are chosen or referendums are decided.

In modern politics, the most high-profile political campaigns are focused on general elections and candidates for head of state or head of government, often a president or prime minister.

A business (also known as an enterprise, a company or a firm) is an organizational entity involved in the provision of goods and services to consumers.

Businesses serve as a form of economic activity, and are prevalent in capitalist economies, where most of them are privately owned and provide goods and services allocated through a market to consumers and customers in exchange for other goods, services, money, or other forms of exchange that hold intrinsic economic value.

Businesses may also be social non-profit enterprises or state-owned public enterprises operated by governments with specific social and economic objectives.

A business owned by multiple private individuals may form as an incorporated company or jointly organise as a partnership.

Countries have different laws that may ascribe different rights to the various business entities.

A database is an organized collection of data.

It is the collection of schemas, tables, queries, reports, views, and other objects.

Sport (UK) or sports (US) are all usually forms of competitive physical activity or games which, through casual or organized participation, aim to use, maintain or improve physical ability and skills while providing enjoyment to participants, and in some cases, entertainment for spectators.

Usually the contest or game is between two sides, each attempting to exceed the other.

Some sports allow a tie game; others provide tie-breaking methods, to ensure one winner and one loser.

A number of such two-sided contests may be arranged in a tournament producing a champion.

Many sports leagues make an annual champion by arranging games in a regular sports season, followed in some cases by playoffs.

Hundreds of sports exist, from those between single contestants, through to those with hundreds of simultaneous participants, either in teams or competing as individuals.

In certain sports such as racing, many contestants may compete, each against each other, with one winner.